Sometimes the legal language about immigration is written in a manner that signifies "American-ness," using veiled racial markers to clearly identify those who are "in" and those who are "out." What do anthropologists call this kind of demarcation?

Anthropologists call this kind of demarcation ethnic boundary.

Explanation:

Ethnic boundary can defined as a cognitive boundary that helps people identify themselves as belonging to a group while identifying others as being foreign to that group. It is the demarcation of "us" and "them". It can be observed in social interactions, language use, and behaviors. The passage we are analyzing here describes an example of ethnic boundary. The language used when writing about immigration identifies those who are in and those who are out, maintaining and reinforcing the perceived difference between those who belong to the group and those who do not.

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